http://kdhx.org/calendar_events/arts_calendar.htm KDHX Events and Arts Calendar.http://www.hypergravity.com/whuzzup/concerts.htm St. Louis Concert Calendar.
You might run into a few good leads by running through those two sites.
http://kdhx.org/schedule.htm Oh, and give a listen to KDHX while you are there. I used to call it the best radio station in the country. It is still among the best.